20769840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1$

素因数の和:356

約数の個数: 240

約数和(自身を含む): 86119488

約数和(自身を除く): 65349648

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 48, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 104, 105, 112, 117, 120, 126, 130, 140, 144, 156, 168, 180, 182, 195, 208, 210, 234, 240, 252, 260, 273, 280, 312, 315, 317, 336, 360, 364, 390, 420, 455, 468, 504, 520, 546, 560, 585, 624, 630, 634, 720, 728, 780, 819, 840, 910, 936, 951, 1008, 1040, 1092, 1170, 1260, 1268, 1365, 1456, 1560, 1585, 1638, 1680, 1820, 1872, 1902, 2184, 2219, 2340, 2520, 2536, 2730, 2853, 3120, 3170, 3276, 3640, 3804, 4095, 4121, 4368, 4438, 4680, 4755, 5040, 5072, 5460, 5706, 6340, 6552, 6657, 7280, 7608, 8190, 8242, 8876, 9360, 9510, 10920, 11095, 11412, 12363, 12680, 13104, 13314, 14265, 15216, 16380, 16484, 17752, 19020, 19971, 20605, 21840, 22190, 22824, 24726, 25360, 26628, 28530, 28847, 32760, 32968, 33285, 35504, 37089, 38040, 39942, 41210, 44380, 45648, 49452, 53256, 57060, 57694, 61815, 65520, 65936, 66570, 74178, 76080, 79884, 82420, 86541, 88760, 98904, 99855, 106512, 114120, 115388, 123630, 133140, 144235, 148356, 159768, 164840, 173082, 177520, 185445, 197808, 199710, 228240, 230776, 247260, 259623, 266280, 288470, 296712, 319536, 329680, 346164, 370890, 399420, 432705, 461552, 494520, 519246, 532560, 576940, 593424, 692328, 741780, 798840, 865410, 989040, 1038492, 1153880, 1298115, 1384656, 1483560, 1597680, 1730820, 2076984, 2307760, 2596230, 2967120, 3461640, 4153968, 5192460, 6923280, 10384920, 20769840]

約数ペア:

[(1, 20769840), (2, 10384920), (3, 6923280), (4, 5192460), (5, 4153968), (6, 3461640), (7, 2967120), (8, 2596230), (9, 2307760), (10, 2076984), (12, 1730820), (13, 1597680), (14, 1483560), (15, 1384656), (16, 1298115), (18, 1153880), (20, 1038492), (21, 989040), (24, 865410), (26, 798840), (28, 741780), (30, 692328), (35, 593424), (36, 576940), (39, 532560), (40, 519246), (42, 494520), (45, 461552), (48, 432705), (52, 399420), (56, 370890), (60, 346164), (63, 329680), (65, 319536), (70, 296712), (72, 288470), (78, 266280), (80, 259623), (84, 247260), (90, 230776), (91, 228240), (104, 199710), (105, 197808), (112, 185445), (117, 177520), (120, 173082), (126, 164840), (130, 159768), (140, 148356), (144, 144235), (156, 133140), (168, 123630), (180, 115388), (182, 114120), (195, 106512), (208, 99855), (210, 98904), (234, 88760), (240, 86541), (252, 82420), (260, 79884), (273, 76080), (280, 74178), (312, 66570), (315, 65936), (317, 65520), (336, 61815), (360, 57694), (364, 57060), (390, 53256), (420, 49452), (455, 45648), (468, 44380), (504, 41210), (520, 39942), (546, 38040), (560, 37089), (585, 35504), (624, 33285), (630, 32968), (634, 32760), (720, 28847), (728, 28530), (780, 26628), (819, 25360), (840, 24726), (910, 22824), (936, 22190), (951, 21840), (1008, 20605), (1040, 19971), (1092, 19020), (1170, 17752), (1260, 16484), (1268, 16380), (1365, 15216), (1456, 14265), (1560, 13314), (1585, 13104), (1638, 12680), (1680, 12363), (1820, 11412), (1872, 11095), (1902, 10920), (2184, 9510), (2219, 9360), (2340, 8876), (2520, 8242), (2536, 8190), (2730, 7608), (2853, 7280), (3120, 6657), (3170, 6552), (3276, 6340), (3640, 5706), (3804, 5460), (4095, 5072), (4121, 5040), (4368, 4755), (4438, 4680)]